The hormone human chorionic gonadotropin (better known as hCG) is produced during pregnancy. It is made by cells that form the placenta, which nourishes the egg after it has been fertilized and becomes attached to the uterine wall. Levels can first be detected by a blood test about 11 days after conception and about 12 - 14 days after conception by a urine test. In general the hCG levels will double every 72 hours. The level will reach its peak in the first 8 - 11 weeks of pregnancy and then will decline and level off for the remainder of the pregnancy.
Key things to remember about hCG levels:
In a bout 85% of normal pregnancies, the hCG level will double every 48 - 72 hours. As you get further along in pregnancy and the hCG level gets higher, the time it takes to double can increase to about every 96 hours.
Caution must be used in making too much of hCG numbers. A normal pregnancy may have low hCG levels and result in a perfectly healthy baby. The results from an ultrasound after 5 - 6 weeks gestation are much more accurate than using hCG numbers.
An hCG level of less than 5mIU/ml is considered negative for pregnancy, and anything above 25mIU/ml is considered positive for pregnancy.
The hCG hormone is measured in milli-international units per milliliter (mIU/ml).
A transvaginal ultrasound should be able to show at least a gestational sac once the hCG levels have reached between 1,000 - 2,000mIU/ml. Because levels can differentiate so much and conception dating can be wrong, a diagnosis should not be made by ultrasound findings until the hCG level has reached at least 2,000.
A single hCG reading is not enough information for most diagnoses. When there is a question regarding the health of the pregnancy, multiple testings of hCG done a couple of days apart give a more accurate assessment of the situation.
Dx Endometriosis & MTHFR (2) Mutations
1st IUI BFP!! Beta& Pro levels low
taking Endometrin vaginal inserts & b/w every 2 days...
9/12/09 Spontaneous Miscarriage @ 5.5 weeks
AF arrivied 10/11/09 (30 days after m/c)
2nd IUI 10/24/09 BFP!! 11/6/09 1st Beta 8, 2nd Beta 28 3rd beta 51, 4TH Beta 327! & 5th Beta 800 , 6th Beta 338 :(on Endometrin vaginal inserts 200 mg twice a day, 2nd M/C 11/25/09 Starting taking BA, 5mg Folic acid, b12 & b9 along with prenatal. Hopefully this will help!
M/C 11/25/09 AF SHOWED 26 DAYS AFTER MC, 3RD IUI SCHEDULED FOR 1/4/10
GOD PLEASE GRANT ME MY WISH!
3RD IUI =BFN
4th IUI on 2/2/10 in the 2WW Please let this be it. Keeping fingers crossed.
2/16/10 = BFP! 1st Beta 146, 2nd Beta 510, 3rd Beta 1808 & Pro 35, 4th Beta 12,000 & Pro 28, 3/2/10 1st u/s poss 2 sacs 1 hb @ 117!!! yay! Praying this is our sticky baby! We love you Baby!
Re: Beta levels
The hormone human chorionic gonadotropin (better known as hCG) is produced during pregnancy. It is made by cells that form the placenta, which nourishes the egg after it has been fertilized and becomes attached to the uterine wall. Levels can first be detected by a blood test about 11 days after conception and about 12 - 14 days after conception by a urine test. In general the hCG levels will double every 72 hours. The level will reach its peak in the first 8 - 11 weeks of pregnancy and then will decline and level off for the remainder of the pregnancy.
Key things to remember about hCG levels:
Early beta numbers are generally only monitored for women with a history of miscarriage or infertility.